CN103478219A - Processing method of dehydrated sweet potatoes - Google Patents
Processing method of dehydrated sweet potatoes Download PDFInfo
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- CN103478219A CN103478219A CN201310408796.XA CN201310408796A CN103478219A CN 103478219 A CN103478219 A CN 103478219A CN 201310408796 A CN201310408796 A CN 201310408796A CN 103478219 A CN103478219 A CN 103478219A
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- ipomoea batatas
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Abstract
The invention relates to a processing method of dehydrated sweet potatoes, belonging to the technical field of food processing. The processing method comprises the steps of sorting, cleaning, blanching, cutting with a machine, spin-drying, drying, cooling, sorting with a machine, manual sorting and packaging. Compared with the prior art, the processing method has the advantages that ultrasonic cleaning and peeling is adopted, so that the peeling efficiency is high and raw material waste is less.
Description
Technical field
The present invention relates to the processing method of a kind of Ipomoea batatas that dewaters, belong to food processing technology field.
Background technology
Dehydrated vegetables refers to except a certain amount of moisture preserves the original dried product of learning through hearsay of vegetables as far as possible.The effect of dehydration is the moisture in vegetables is reduced, and improves the concentration of solable matter, suppresses microbial activities, and the activity of the contained enzyme of vegetables itself also is suppressed simultaneously, and product can long preservation.
What the drying application of dewatering vegetable at present was many is heated-air drying dehydration and vacuum freezedrying dehydration, wherein the heated-air drying dewatering process is as follows: 1, raw material is selected: select to have the vegetable variety that enriches meat, excellent roguing be should strictly select before dehydration, ill worm, rotten, shrivelled part rejected.With eighty per cant maturity, be advisable, overdone or not yet done also should choose, and except melon, goes the seed flesh, and the other types vegetables can be rinsed well with clear water, then put in the cool and dry, but should not tan by the sun in the sun.2, cutting, blanching: by the raw material of wash clean according to product requirement cut into slices respectively, the shape such as silk, bar.While precooking, different different because of raw material, easily well-done putting in boiling water scalds, and is difficult for well-done putting in boiling water and slightly boils a moment, and generally blanching time is 2～4 minutes.3, cooling, draining: the vegetables of precooking after processing should carry out cooling (generally adopting the cold water shower) immediately, make it be down to rapidly normal temperature.After cooling, for shortening drying time, available centrifuge water dumping, also available simple hand method is pressed drop, after the water drop is most, just can spread air dry a little out, in order to the sabot baking.4, dry: should determine different temperature, time, color and luster and moisture content while drying according to different cultivars.Dry and generally carry out in drying room.Drying room roughly has three kinds: the simple and easy drying room of the first adopts the adverse current forced air drying; The second is the drying room combined with two layers of twin tunnel, concurrent-countercurrent; The third is van-type stainless steel hot blast dryer, and the bake out temperature scope is 65 ℃～85 ℃, minute different temperatures drying, progressively cooling.While adopting first, second kind of drying room, vegetables are spread equably in dish, then be put on the shelf of establishing in advance, keep 50 ℃ of left and right of room temperature, will constantly stir simultaneously, it is accelerated dry, general drying time is about 5 hours.5, go-on-go, packing: dehydrated vegetables reaches the food hygiene law requirement through check, can be divided in polybag, and be sealed, cases, then listing.
At present, traditional skinning machine adopts drum-type seperator rolling friction peeling, because the shape size of raw material differs, so such peeling mode wastage of material rate is very high, and peeling efficiency is low, and can not remove the peel at some distorted regions.
Summary of the invention
The technical problem that the present invention solves is: propose the processing method of a kind of Ipomoea batatas that dewaters, the method adopts Ultrasonic Cleaning, the grit abrasion peeling, thus improve peeling efficiency, minimizing wastage of material.
In order to solve the problems of the technologies described above, the technical scheme that the present invention proposes is: the processing method of a kind of Ipomoea batatas that dewaters comprises the following steps:
1) the selection sweet potato material, reject the defective products in Ipomoea batatas;
(2) Ultrasonic Cleaning peeling: will be placed in the saturated aqueous common salt that contains diameter 1.5～2.0mm gravel through the Ipomoea batatas of selection, utilize ultrasonic generator to apply ultrasonic wave to described saturated aqueous common salt liquid, hyperacoustic frequency and the sound intensity are respectively 25KHZ～50KHZ and 1.5～3W/cm
2, 60 to 150 seconds duration, then Ipomoea batatas is taken out and rinses with clear water;
(3) blanching is cooling: with the hot water blanching of 95～100 ℃ of temperature through clean Ipomoea batatas 3～5 min of peeling, then pull out insert in cold water cooling;
(4) machine is cut: use cutting machine, and the Ipomoea batatas of blanching is diced;
(5) dry: send the Ipomoea batatas fourth cut to centrifuge and dry;
(6) first drying: the Ipomoea batatas fourth after centrifuge dripping is put into to baking oven and dried, 75 ± 5 ℃ for the treatment of temperatures, processing time 2～4h;
(7) cooling: the Ipomoea batatas fourth after drying is used the air blast quenching, and temperature is down to below 40 ℃;
(8) machine choosing for the first time: according to the granularity requirements of product, select the screen cloth of dimension to be screened the Ipomoea batatas fourth of drying, then carry out magnetic separation, remove light impurity, metal object, powder and rectangular;
(9) manually sort: mainly remove foreign matter, worm fly, Huang Ye, the old Gen Jiqian road not removed rectangular thing that sieves;
(10) weigh, pack.
Further improving of technique scheme is: after described step (6), if the water content of Ipomoea batatas fourth, higher than 7%, is carried out secondary drying; 70 ± 5 ℃ of bake out temperatures, processing time 2～4h, make Ipomoea batatas fourth water content lower than 7%.
Further improving of technique scheme is: described step (9) also has machine choosing for the second time afterwards: use screening, selection by winnowing, magnetic separation, metal detection, remove manually to sort and fail hair, mudstone and the metal object removed.
Further improving of technique scheme is: in described step (10), also have afterwards selective examination: carry out the requirement check of material moisture content, microorganism and client's appointment; Warehouse-in after selective examination is deposited: material storage temperature≤12 ℃, relative humidity≤70%, warehouse for finished product need clean, drying, health, directly do not expose to sunlight, the line identifier of going forward side by side.
Further improving of technique scheme is: in described step (2), described ultrasonic generator is the piezoelectric-type ultrasonic wave generating device.
Further improving of technique scheme is: in described step (7), described manually sorting is to carry out in the toilet of 20 ± 2 ℃ of room temperature controls and relative humidity control≤50%.
Further improving of technique scheme is: described defective products is straw, metal, hair and foreign matter, and the Ipomoea batatas putresced.
The invention has the beneficial effects as follows:
The processing method of dehydration provided by the invention Ipomoea batatas adopts grit, saturated aqueous common salt to coordinate with ultrasonic wave, chooses that (density is at 1.2～1.4g/cm than the grit of lightweight
3), grit is suspended in saturated aqueous common salt, under hyperacoustic vibrations, constantly clash into the Ipomoea batatas surface, can the Ipomoea batatas surface be removed totally and is somebody's turn to do in the short time, the processing method of dehydration Ipomoea batatas provided by the invention adopts the Ultrasonic Cleaning peeling, and peeling efficiency is high, wastage of material is few.
The specific embodiment
Embodiment
The processing method of a kind of Ipomoea batatas that dewaters comprises the following steps:
(1) the selection sweet potato material, reject the defective products in Ipomoea batatas: the foreign matters such as the Ipomoea batatas rotted, straw, metal, hair;
(2) Ultrasonic Cleaning peeling: will be placed in the saturated aqueous common salt that contains diameter 1.5～2.0mm gravel through the Ipomoea batatas of selection, utilize the piezoelectric-type ultrasonic wave generating device to apply ultrasonic wave to described saturated aqueous common salt liquid, hyperacoustic frequency and the sound intensity are respectively 25KHZ～50KHZ and 1.5～3W/cm
2, 60 to 150 seconds duration, then Ipomoea batatas is taken out and rinses with clear water;
(3) blanching is cooling: with the hot water blanching of 95～100 ℃ of temperature through clean Ipomoea batatas 3～5 min of peeling, then pull out insert in cold water cooling;
(4) machine is cut: use cutting machine, and the Ipomoea batatas of blanching is diced;
(5) dry: send the Ipomoea batatas fourth cut to centrifuge and dry;
(6) first drying: the Ipomoea batatas fourth after centrifuge dripping is put into to baking oven and dried, 75 ± 5 ℃ for the treatment of temperatures, processing time 2～4h;
(7) secondary drying: by water content in upper step higher than 7% batch the Ipomoea batatas fourth put into baking oven and dried, 70 ± 5 ℃ for the treatment of temperatures, processing time 2～4h, guarantee that water content is lower than 7%;
(8) cooling: the Ipomoea batatas fourth after drying is used the air blast quenching, and temperature is down to below 40 ℃;
(9) machine choosing for the first time: according to the granularity requirements of product, select the screen cloth of dimension to be screened the Ipomoea batatas fourth of drying, then carry out magnetic separation, remove light impurity, metal object, powder and rectangular;
(10) manually sort: mainly remove foreign matter, worm fly, Huang Ye, the old Gen Jiqian road not removed rectangular thing that sieves;
(11) machine choosing for the second time: use screening, selection by winnowing, magnetic separation, metal detection, main removal manually sorts fails hair, mudstone and the metal object removed.
(12) weigh, pack.
Originally be in step in embodiment (10), manually sorting is to carry out in the toilet of 20 ± 2 ℃ of room temperature controls and relative humidity control≤50%; After having sorted, use uviol lamp, ozone generator to carry out disinfection to the chamber of sorting at every turn.
Step (12) also needs to be spot-check afterwards: carry out the requirement check of material moisture content, microorganism and client's appointment; Warehouse-in after selective examination is deposited: material storage temperature≤12 ℃, relative humidity≤70%, warehouse for finished product need clean, drying, health, directly do not expose to sunlight, the line identifier of going forward side by side.
At first small lot trial run in step (2), according to trial run situation furnishing confirm this batch of design parameter definite value, then produce in enormous quantities, and monitor at any time the condition of production, and adjust parameter.
Originally be that grit in embodiment is chosen glutenite than lightweight (density is 1.2～1.4g/cm
3), through smashing the particle of going into 1.5mm～2.0mm, every operation is changed once in 6～12 hours.
The described concrete technical scheme of above-described embodiment that is not limited to of the present invention, all employings are equal to the technical scheme of replacing formation and are the protection domain that the present invention requires.
Claims (7)
1. the processing method of the Ipomoea batatas that dewaters is characterized in that comprising the following steps:
(1) the selection sweet potato material, reject the defective products in Ipomoea batatas;
(2) Ultrasonic Cleaning peeling: will be placed in the saturated aqueous common salt that contains diameter 1.5～2.0mm gravel through the Ipomoea batatas of selection, utilize ultrasonic generator to apply ultrasonic wave to described saturated aqueous common salt liquid, hyperacoustic frequency and the sound intensity are respectively 25KHZ～50KHZ and 1.5～3W/cm2,60 to 150 seconds duration, then Ipomoea batatas is taken out and rinses with clear water;
(3) blanching is cooling: with the hot water blanching of 95～100 ℃ of temperature through clean Ipomoea batatas 3～5 min of peeling, then pull out insert in cold water cooling;
(4) machine is cut: use cutting machine, and the Ipomoea batatas of blanching is diced;
(5) dry: send the Ipomoea batatas fourth cut to centrifuge and dry;
(6) first drying: the Ipomoea batatas fourth after centrifuge dripping is put into to baking oven and dried, 75 ± 5 ℃ for the treatment of temperatures, processing time 2～4h;
(7) cooling: the Ipomoea batatas fourth after drying is used the air blast quenching, and temperature is down to below 40 ℃;
(8) machine choosing for the first time: according to the granularity requirements of product, select the screen cloth of dimension to be screened the Ipomoea batatas fourth of drying, then carry out magnetic separation, remove light impurity, metal object, powder and rectangular;
(9) manually sort: mainly remove foreign matter, worm fly, Huang Ye, the old Gen Jiqian road not removed rectangular thing that sieves;
(10) weigh, pack.
2. the processing method of dehydration Ipomoea batatas according to claim 1, is characterized in that: after described step (6), if the water content of Ipomoea batatas fourth, higher than 7%, is carried out secondary drying; 70 ± 5 ℃ of bake out temperatures, processing time 2～4h, make Ipomoea batatas fourth water content lower than 7%.
3. the processing method of dehydration according to claim 1 Ipomoea batatas, it is characterized in that: described step (9) also has machine choosing for the second time afterwards: use screening, selection by winnowing, magnetic separation, metal detection, remove manually to sort and fail hair, mudstone and the metal object removed.
4. the processing method of dehydration Ipomoea batatas according to claim 1, is characterized in that: in described step (10), also have afterwards selective examination: carry out the requirement check of material moisture content, microorganism and client's appointment; Warehouse-in after selective examination is deposited: material storage temperature≤12 ℃, relative humidity≤70%, warehouse for finished product need clean, drying, health, directly do not expose to sunlight, the line identifier of going forward side by side.
5. according to the processing method of arbitrary described dehydration Ipomoea batatas in claim 1～4, it is characterized in that: in described step (2), described ultrasonic generator is the piezoelectric-type ultrasonic wave generating device.
6. according to the processing method of arbitrary described dehydration Ipomoea batatas in claim 1～4, it is characterized in that: in described step (7), described manually sorting is to carry out in the toilet of 20 ± 2 ℃ of room temperature controls and relative humidity control≤50%.
7. according to the processing method of the arbitrary described dehydration Ipomoea batatas of claim 1～4, it is characterized in that: described defective products is straw, metal, hair and foreign matter, and the Ipomoea batatas putresced.
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| CN201310408796.XA CN103478219A (en) | 2013-09-10 | 2013-09-10 | Processing method of dehydrated sweet potatoes |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103767051A (en) * | 2014-01-22 | 2014-05-07 | 佛山市三水粤山装饰实业有限公司 | Cassava drying production line and process for drying cassava by same |
| CN105499200A (en) * | 2015-12-15 | 2016-04-20 | 安徽省康君食品有限公司 | Processing method of dewatered honeysuckle |
| CN106036944A (en) * | 2015-04-09 | 2016-10-26 | 福建连城健尔聪食品有限公司 | Far-infrared microwave drying device and processing method for drying sweet potatoes |
| CN107087774A (en) * | 2017-06-14 | 2017-08-25 | 兴化市绿禾食品有限公司 | It is dehydrated the processing method of Kiwi berry |
| CN110679231A (en) * | 2019-11-18 | 2020-01-14 | 巢湖春友种业科技有限公司 | Novel process for ensuring germination rate and drying of sweet potatoes |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102342462A (en) * | 2011-10-01 | 2012-02-08 | 江苏派乐滋食品有限公司 | Preparation method of selenium rich sweet potato flakes |
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2013
- 2013-09-10 CN CN201310408796.XA patent/CN103478219A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102342462A (en) * | 2011-10-01 | 2012-02-08 | 江苏派乐滋食品有限公司 | Preparation method of selenium rich sweet potato flakes |
Non-Patent Citations (1)
| Title |
|---|
| 郑友军: "《小食品及儿童食品加工实用手册》", 30 June 1986 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103767051A (en) * | 2014-01-22 | 2014-05-07 | 佛山市三水粤山装饰实业有限公司 | Cassava drying production line and process for drying cassava by same |
| CN103767051B (en) * | 2014-01-22 | 2016-08-17 | 佛山市三水粤山装饰实业有限公司 | A kind of cassava drying production line and the method for dry cassava thereof |
| CN106036944A (en) * | 2015-04-09 | 2016-10-26 | 福建连城健尔聪食品有限公司 | Far-infrared microwave drying device and processing method for drying sweet potatoes |
| CN105499200A (en) * | 2015-12-15 | 2016-04-20 | 安徽省康君食品有限公司 | Processing method of dewatered honeysuckle |
| CN107087774A (en) * | 2017-06-14 | 2017-08-25 | 兴化市绿禾食品有限公司 | It is dehydrated the processing method of Kiwi berry |
| CN110679231A (en) * | 2019-11-18 | 2020-01-14 | 巢湖春友种业科技有限公司 | Novel process for ensuring germination rate and drying of sweet potatoes |
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Application publication date: 20140101 |